yield point

简明释义

怜点

英英释义

例句

1.The material reached its yield point 屈服点 during the stress test, indicating it would deform permanently.

在应力测试中，材料达到了它的yield point 屈服点，这表明它将发生永久变形。

2.Engineers must consider the yield point 屈服点 of steel when designing structures to ensure safety.

工程师在设计结构时必须考虑钢材的yield point 屈服点以确保安全。

3.Understanding the yield point 屈服点 helps in selecting the right material for engineering projects.

理解yield point 屈服点有助于为工程项目选择合适的材料。

4.The yield point 屈服点 of aluminum is lower than that of steel, making it more suitable for lightweight applications.

铝的yield point 屈服点低于钢，因此更适合用于轻量化应用。

5.In tensile testing, the yield point 屈服点 is crucial for determining how much load a material can bear.

在拉伸测试中，yield point 屈服点 对于确定材料能承受多少负载至关重要。

作文

In the field of materials science and engineering, understanding the mechanical properties of materials is crucial for designing safe and efficient structures. One of the key concepts in this domain is the yield point, which refers to the stress level at which a material begins to deform plastically. Beyond this point, the material will not return to its original shape when the applied stress is removed. This phenomenon is critical in applications where materials are subjected to various loads, such as in construction, automotive, and aerospace industries.The yield point is an essential parameter in determining the strength and durability of materials. It is often measured in units of pressure, such as pascals (Pa), and can vary significantly between different materials. For instance, metals typically have a well-defined yield point, while polymers may exhibit a more gradual transition from elastic to plastic deformation. Understanding this distinction is vital for engineers when selecting materials for specific applications.When a material is loaded within its elastic limit, it will follow Hooke's Law, meaning that the stress is proportional to the strain. However, once the yield point is reached, the material enters the plastic deformation stage, where the relationship between stress and strain becomes nonlinear. This behavior is illustrated in a stress-strain curve, where the yield point is marked as the point at which the curve begins to deviate from the linear region. Engineers must take these characteristics into account to ensure that structures can withstand expected loads without permanent deformation.In practical applications, knowing the yield point helps engineers design components that can safely bear loads without undergoing significant permanent changes. For example, in the construction of bridges, understanding the yield point of steel beams allows for the calculation of how much weight they can support before failing. Similarly, in the automotive industry, knowing the yield point of materials used in car frames can prevent accidents caused by structural failures during collisions.Moreover, the yield point is not only important for static loads but also for dynamic loading conditions, such as those experienced during earthquakes or high-speed impacts. Materials that can withstand higher yield points provide greater safety margins in such scenarios. Thus, ongoing research into developing new materials with enhanced yield strengths is a priority in engineering disciplines.In conclusion, the concept of the yield point is fundamental in materials science, impacting various industries and applications. By understanding how materials behave under stress and identifying their yield points, engineers can design safer and more efficient structures. This knowledge is crucial not only for ensuring the integrity of buildings and vehicles but also for advancing technology and improving overall safety standards in our modern world.

在材料科学和工程领域，理解材料的机械性能对于设计安全高效的结构至关重要。在这个领域中，一个关键概念是屈服点，它指的是材料开始发生塑性变形的应力水平。超过这个点，材料在施加的应力去除后不会恢复到其原始形状。这种现象在材料承受各种负载的应用中至关重要，例如在建筑、汽车和航空航天工业中。屈服点是确定材料强度和耐久性的一个重要参数。它通常以压力单位（如帕斯卡，Pa）来测量，并且在不同材料之间可能会有显著差异。例如，金属通常具有明确的屈服点，而聚合物可能表现出从弹性到塑性变形的更渐进的过渡。理解这种区别对于工程师在选择特定应用材料时至关重要。当材料在其弹性极限内加载时，它将遵循胡克定律，这意味着应力与应变成正比。然而，一旦达到屈服点，材料进入塑性变形阶段，此时应力与应变之间的关系变得非线性。这种行为在应力-应变曲线中得以体现，其中屈服点标记为曲线开始偏离线性区域的点。工程师必须考虑这些特性，以确保结构能够承受预期负载而不会发生永久变形。在实际应用中，了解屈服点帮助工程师设计能够安全承受负载而不发生显著永久变化的组件。例如，在桥梁建设中，了解钢梁的屈服点可以计算它们在失效之前可以支持的重量。同样，在汽车工业中，了解用于汽车框架的材料的屈服点可以防止由于结构故障而导致的事故。此外，屈服点不仅对静态负载重要，而且对动态加载条件也很重要，例如在地震或高速冲击期间所经历的条件。能够承受更高屈服点的材料在这种情况下提供了更大的安全裕度。因此，持续研究开发具有增强屈服强度的新材料是工程学科的优先事项。总之，屈服点的概念在材料科学中是基础性的，影响着各个行业和应用。通过理解材料在应力下的行为并识别其屈服点，工程师可以设计出更安全、更高效的结构。这一知识对于确保建筑物和车辆的完整性至关重要，同时也是推动技术进步和提高我们现代世界整体安全标准的重要因素。